package com.chinasofti.collection;

import java.util.Arrays;

public class Demo07 {
    public static void main(String[] args) {
        //int[] arr = {3,2,7,4,6};
        //返回指定数组内容的字符串表现形式
        //System.out.println(Arrays.toString(arr));

        //int[] arr = {3,2,7,4,6};
        //Arrays.sort(arr);
        //System.out.println(Arrays.toString(arr));

        int[] arr = {3,2,7,4,6};
        //二分法查找指定元素索引
        int index = Arrays.binarySearch(arr,7);
        System.out.println("index = " + index);
    }
}
